@Bobberman, When you dig them up, how much of the existing vines and foliage do you keep?
What size container do you put a plant in? Have you done this yet this year? (Wondering if I should try digging mine up even though they are really blooming well right NOW, after mediocre performance all season

)
I haven't found the right location/technique for growing nasturtiums yet. They seem to take a very long time to reach maturity and start blooming. This year, I lost a lot of them at seedling stage, and these two were the only survivors. The orange flowered one on the left is in a part shade, dry location, and the same red flowered one on the right/bottom was planted in the middle of this bed when the tomatoes were still very small. Between the tomatoes and a very dense overhead canopy of pole and runner beans, it got very dark. The plant crawled out to the edge and then grew along to the side as shown and FINALLY started blooming.
I wonder if nasturtiums could be grown in a hanging pot....?